jadami10 commented on code in PR #11869:
URL: https://github.com/apache/pinot/pull/11869#discussion_r1814004022


##########
pinot-spi/src/main/java/org/apache/pinot/spi/utils/IngestionConfigUtils.java:
##########
@@ -116,7 +117,7 @@ public static String 
getBatchSegmentIngestionType(TableConfig tableConfig) {
     if (segmentIngestionType == null) {
       segmentIngestionType = 
tableConfig.getValidationConfig().getSegmentPushType();
     }
-    return segmentIngestionType;
+    return (segmentIngestionType == null) ? DEFAULT_SEGMENT_INGESTION_TYPE : 
segmentIngestionType;

Review Comment:
   Defaulting to `APPEND` causes 
https://github.com/apache/pinot/blob/master/pinot-segment-spi/src/main/java/org/apache/pinot/segment/spi/creator/name/NormalizedDateSegmentNameGenerator.java#L78
 to switch to the `if (_appendPushType)` which renames all segments. Previous, 
it went down the other branch first. For refresh tables, this led to duplicated 
data.
   
   I'm not sure there's a good default here. It should just throw an exception. 
But nothing validates ingestion type or frequency from what I can tell.



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